One vertex per element, one color per generator, with an edge from x to x·s.
(3,4)(6,8)(9,10,12,14)(11,15,16,13)(17,18,23,27)(19,28,29,24)(20,21,25,31)(22,26,32,30)(1,2,5,7)(3,8,4,6)(9,11,12,16)(10,13,14,15)(17,19,23,29)(18,24,27,28)(20,22,25,32)(21,30,31,26)(1,3,5,4)(2,6,7,8)(19,29)(22,32)(24,28)(26,30)(3,4)(6,8)(17,20)(18,21)(19,22)(23,25)(24,30)(26,28)(27,31)(29,32) involution — undirected(1,4,5,3)(2,6,7,8)(17,21)(18,25)(19,30)(20,27)(22,28)(23,31)(24,32)(26,29)(1,2)(3,8)(4,6)(5,7)(17,22)(18,26)(19,20)(21,28)(23,32)(24,31)(25,29)(27,30) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.